Time Spiral Timeshifted

Creature — Kobold

Other Kobold creatures you control get +1/+0.

Kobold Taskmaster

Deckmasters

Instant

Guerrilla Tactics deals 2 damage to any target.
When a spell or ability an opponent controls causes you to discard this card, it deals 4 damage to any target.

Guerrilla Tactics

Beatdown Box Set

Artifact Creature — Bird

Flying
This creature enters with four +1/+0 counters on it.
At end of combat, if this creature attacked or blocked this combat, remove a +1/+0 counter from it.
{X}, {T}: Put up to X +1/+0 counters on this creature. This ability can't cause the total number of +1/+0 counters on this creature to be greater than four. Activate only during your upkeep.

Clockwork Avian

Classic Sixth Edition

Destroy target creature with power 4 or greater. It can't be regenerated.

Reprisal

Creature — Spirit Minion

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Lost Soul

Fifth Edition

Sorcery

Destroy target artifact with mana value X. It can't be regenerated. Detonate deals X damage to that artifact's controller.

Detonate

Creature — Dwarf Soldier

Whenever this creature blocks or becomes blocked by one or more Orcs, this creature gets +0/+2 until end of turn.

Dwarven Soldier

Alliances

Creature — Human Rogue Mercenary

Flying
At the beginning of your upkeep, put a wage counter on this creature. You may pay {2} for each wage counter on it. If you don't, remove all wage counters from this creature and an opponent gains control of it.

Rogue Skycaptain

Pro Tour Collector Set

Creature — Human Cleric Knight

Protection from black
{W}: This creature gains first strike until end of turn.
{W}{W}: This creature gets +1/+0 until end of turn.

Order of Leitbur

Renaissance

Enchantment

Wall creatures you control get +1/+0 and have banding. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Fortified Area

Inferno deals 6 damage to each creature and each player.

Inferno

Chronicles

Legendary Creature — Human Archer

{T}: Tor Wauki deals 2 damage to target attacking or blocking creature.

Tor Wauki

Artifact Creature — Shapeshifter

{0}: This creature's base toughness becomes equal to 1 plus the power of target creature blocking or blocked by this creature. (This effect lasts indefinitely.)

Sentinel

Fallen Empires

Creature — Homarid Warrior

{U}: This creature gains shroud until end of turn and doesn't untap during your next untap step. Tap it. (A creature with shroud can't be the target of spells or abilities.)

Homarid Warrior

Creature — Avatar Praetor

First strike, trample
At the beginning of your upkeep, put a -2/-2 counter on this creature.
Sacrifice a creature: Remove a -2/-2 counter from this creature. If the sacrificed creature was a Thrull, put a +1/+0 counter on this creature. Activate only during your upkeep and only once each turn.

Ebon Praetor

{1}{G}: Target blocking creature gets +0/+1 until end of turn.

Elven Fortress

The Dark

Riptide

Land

{T}: Choose two target blocking creatures controlled by the same opponent. If each of those creatures could block all creatures that the other is blocking, remove both of them from combat. Each one then blocks all creatures the other was blocking.
Whenever this land becomes tapped, it deals 2 damage to you and each creature you control.

Sorrow's Path

Legends

Creature — Elemental Spirit

Thunder Spirit

One or more target creatures become blue until end of turn.

Sea Kings' Blessing

Creatures with islandwalk can be blocked as though they didn't have islandwalk.

Undertow

Creature — Ox

Raging Bull

One or more target creatures become green until end of turn.

Sylvan Paradise

Antiquities

Artifact

Whenever an artifact you control is put into a graveyard from the battlefield, if it wasn't sacrificed, you may pay {3}. If you do, draw a card.